Question
72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71...
72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 (i) Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.) x = yr s = yr
Homework Answers
Answer #1
Solution : Given that 72,68,81,93,56,19,78,94,83,84,77,69,85,97,75,71,86,47,66,27
sample mean = sum of terms/number of terms
= 1428/20
= 71.40
Sample standard deviation = 20.6484 = 20.65 (rounded)
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